ASTROSAT CZTI

Data Quality Report

Orbit 58802

Creation date: 2026-08-10T16:11:31.202136
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A14_106T01_9000006596_58802cztM0_level2.fits modeM0/AS1A14_106T01_9000006596_58802cztM0_level2_quad_clean.evt
Size (bytes)646,954,56083,145,600
Size617.0 MB 79.3 MB
Events in quadrant A3,503,859636,496
Events in quadrant B3,495,508674,143
Events in quadrant C3,391,350590,671
Events in quadrant D13,079,553186,951

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143871
B0143331
C0143281
D0430701

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61451592.587469%
B61452173.531326%
C61452263.677787%
D6145442572.009764%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7295 6145 75 75 1.03% 1.22%
B 7295 6145 116 116 1.59% 1.89%
C 7295 6145 156 156 2.14% 2.54%
D 7294 6144 4273 4273 58.58% 69.55%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 251 347271 1939.94 721 703 178.6
A 7 64 166309 926.99 721 703 178.6
A 13 248 107468 597.63 721 703 178.6
B 4 201 253029 1669.14 702 677 151.2
B 4 236 121430 798.7 702 677 151.2
B 8 234 77612 508.87 702 677 151.2
C 13 3 520077 2765.78 685 680 187.8
C 12 252 107987 571.41 685 680 187.8
C 12 249 32006 166.81 685 680 187.8
D 12 110 9028847 79468.44 397 379 113.6
D 11 129 2220879 19544.81 397 379 113.6
D 5 32 46298 404.18 397 379 113.6

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct